diff options
Diffstat (limited to 'drivers/staging/line6/capture.c')
-rw-r--r-- | drivers/staging/line6/capture.c | 432 |
1 files changed, 0 insertions, 432 deletions
diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c deleted file mode 100644 index e6ca631e3f79..000000000000 --- a/drivers/staging/line6/capture.c +++ /dev/null @@ -1,432 +0,0 @@ -/* - * Line6 Linux USB driver - 0.9.1beta - * - * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation, version 2. - * - */ - -#include <linux/slab.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> - -#include "audio.h" -#include "capture.h" -#include "driver.h" -#include "pcm.h" -#include "pod.h" - -/* - Find a free URB and submit it. -*/ -static int submit_audio_in_urb(struct snd_line6_pcm *line6pcm) -{ - int index; - unsigned long flags; - int i, urb_size; - int ret; - struct urb *urb_in; - - spin_lock_irqsave(&line6pcm->lock_audio_in, flags); - index = - find_first_zero_bit(&line6pcm->active_urb_in, LINE6_ISO_BUFFERS); - - if (index < 0 || index >= LINE6_ISO_BUFFERS) { - spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags); - dev_err(line6pcm->line6->ifcdev, "no free URB found\n"); - return -EINVAL; - } - - urb_in = line6pcm->urb_audio_in[index]; - urb_size = 0; - - for (i = 0; i < LINE6_ISO_PACKETS; ++i) { - struct usb_iso_packet_descriptor *fin = - &urb_in->iso_frame_desc[i]; - fin->offset = urb_size; - fin->length = line6pcm->max_packet_size; - urb_size += line6pcm->max_packet_size; - } - - urb_in->transfer_buffer = - line6pcm->buffer_in + - index * LINE6_ISO_PACKETS * line6pcm->max_packet_size; - urb_in->transfer_buffer_length = urb_size; - urb_in->context = line6pcm; - - ret = usb_submit_urb(urb_in, GFP_ATOMIC); - - if (ret == 0) - set_bit(index, &line6pcm->active_urb_in); - else - dev_err(line6pcm->line6->ifcdev, - "URB in #%d submission failed (%d)\n", index, ret); - - spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags); - return 0; -} - -/* - Submit all currently available capture URBs. -*/ -int line6_submit_audio_in_all_urbs(struct snd_line6_pcm *line6pcm) -{ - int ret, i; - - for (i = 0; i < LINE6_ISO_BUFFERS; ++i) { - ret = submit_audio_in_urb(line6pcm); - if (ret < 0) - return ret; - } - - return 0; -} - -/* - Unlink all currently active capture URBs. -*/ -void line6_unlink_audio_in_urbs(struct snd_line6_pcm *line6pcm) -{ - unsigned int i; - - for (i = LINE6_ISO_BUFFERS; i--;) { - if (test_bit(i, &line6pcm->active_urb_in)) { - if (!test_and_set_bit(i, &line6pcm->unlink_urb_in)) { - struct urb *u = line6pcm->urb_audio_in[i]; - - usb_unlink_urb(u); - } - } - } -} - -/* - Wait until unlinking of all currently active capture URBs has been - finished. -*/ -void line6_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm) -{ - int timeout = HZ; - unsigned int i; - int alive; - - do { - alive = 0; - for (i = LINE6_ISO_BUFFERS; i--;) { - if (test_bit(i, &line6pcm->active_urb_in)) - alive++; - } - if (!alive) - break; - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(1); - } while (--timeout > 0); - if (alive) - snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); -} - -/* - Unlink all currently active capture URBs, and wait for finishing. -*/ -void line6_unlink_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm) -{ - line6_unlink_audio_in_urbs(line6pcm); - line6_wait_clear_audio_in_urbs(line6pcm); -} - -/* - Copy data into ALSA capture buffer. -*/ -void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize) -{ - struct snd_pcm_substream *substream = - get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE); - struct snd_pcm_runtime *runtime = substream->runtime; - const int bytes_per_frame = line6pcm->properties->bytes_per_frame; - int frames = fsize / bytes_per_frame; - - if (runtime == NULL) - return; - - if (line6pcm->pos_in_done + frames > runtime->buffer_size) { - /* - The transferred area goes over buffer boundary, - copy two separate chunks. - */ - int len; - - len = runtime->buffer_size - line6pcm->pos_in_done; - - if (len > 0) { - memcpy(runtime->dma_area + - line6pcm->pos_in_done * bytes_per_frame, fbuf, - len * bytes_per_frame); - memcpy(runtime->dma_area, fbuf + len * bytes_per_frame, - (frames - len) * bytes_per_frame); - } else { - /* this is somewhat paranoid */ - dev_err(line6pcm->line6->ifcdev, - "driver bug: len = %d\n", len); - } - } else { - /* copy single chunk */ - memcpy(runtime->dma_area + - line6pcm->pos_in_done * bytes_per_frame, fbuf, fsize); - } - - line6pcm->pos_in_done += frames; - if (line6pcm->pos_in_done >= runtime->buffer_size) - line6pcm->pos_in_done -= runtime->buffer_size; -} - -void line6_capture_check_period(struct snd_line6_pcm *line6pcm, int length) -{ - struct snd_pcm_substream *substream = - get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE); - - line6pcm->bytes_in += length; - if (line6pcm->bytes_in >= line6pcm->period_in) { - line6pcm->bytes_in %= line6pcm->period_in; - snd_pcm_period_elapsed(substream); - } -} - -void line6_free_capture_buffer(struct snd_line6_pcm *line6pcm) -{ - kfree(line6pcm->buffer_in); - line6pcm->buffer_in = NULL; -} - -/* - * Callback for completed capture URB. - */ -static void audio_in_callback(struct urb *urb) -{ - int i, index, length = 0, shutdown = 0; - unsigned long flags; - - struct snd_line6_pcm *line6pcm = (struct snd_line6_pcm *)urb->context; - - line6pcm->last_frame_in = urb->start_frame; - - /* find index of URB */ - for (index = 0; index < LINE6_ISO_BUFFERS; ++index) - if (urb == line6pcm->urb_audio_in[index]) - break; - - spin_lock_irqsave(&line6pcm->lock_audio_in, flags); - - for (i = 0; i < LINE6_ISO_PACKETS; ++i) { - char *fbuf; - int fsize; - struct usb_iso_packet_descriptor *fin = &urb->iso_frame_desc[i]; - - if (fin->status == -EXDEV) { - shutdown = 1; - break; - } - - fbuf = urb->transfer_buffer + fin->offset; - fsize = fin->actual_length; - - if (fsize > line6pcm->max_packet_size) { - dev_err(line6pcm->line6->ifcdev, - "driver and/or device bug: packet too large (%d > %d)\n", - fsize, line6pcm->max_packet_size); - } - - length += fsize; - - /* the following assumes LINE6_ISO_PACKETS == 1: */ - line6pcm->prev_fbuf = fbuf; - line6pcm->prev_fsize = fsize; - -#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE - if (!(line6pcm->flags & LINE6_BITS_PCM_IMPULSE)) -#endif - if (test_bit(LINE6_INDEX_PCM_ALSA_CAPTURE_STREAM, - &line6pcm->flags) && (fsize > 0)) - line6_capture_copy(line6pcm, fbuf, fsize); - } - - clear_bit(index, &line6pcm->active_urb_in); - - if (test_and_clear_bit(index, &line6pcm->unlink_urb_in)) - shutdown = 1; - - spin_unlock_irqrestore(&line6pcm->lock_audio_in, flags); - - if (!shutdown) { - submit_audio_in_urb(line6pcm); - -#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE - if (!(line6pcm->flags & LINE6_BITS_PCM_IMPULSE)) -#endif - if (test_bit(LINE6_INDEX_PCM_ALSA_CAPTURE_STREAM, - &line6pcm->flags)) - line6_capture_check_period(line6pcm, length); - } -} - -/* open capture callback */ -static int snd_line6_capture_open(struct snd_pcm_substream *substream) -{ - int err; - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); - - err = snd_pcm_hw_constraint_ratdens(runtime, 0, - SNDRV_PCM_HW_PARAM_RATE, - (&line6pcm-> - properties->snd_line6_rates)); - if (err < 0) - return err; - - runtime->hw = line6pcm->properties->snd_line6_capture_hw; - return 0; -} - -/* close capture callback */ -static int snd_line6_capture_close(struct snd_pcm_substream *substream) -{ - return 0; -} - -/* hw_params capture callback */ -static int snd_line6_capture_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - int ret; - struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); - - /* -- Florian Demski [FD] */ - /* don't ask me why, but this fixes the bug on my machine */ - if (line6pcm == NULL) { - if (substream->pcm == NULL) - return -ENOMEM; - if (substream->pcm->private_data == NULL) - return -ENOMEM; - substream->private_data = substream->pcm->private_data; - line6pcm = snd_pcm_substream_chip(substream); - } - /* -- [FD] end */ - - ret = line6_pcm_acquire(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER); - - if (ret < 0) - return ret; - - ret = snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); - if (ret < 0) { - line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER); - return ret; - } - - line6pcm->period_in = params_period_bytes(hw_params); - return 0; -} - -/* hw_free capture callback */ -static int snd_line6_capture_hw_free(struct snd_pcm_substream *substream) -{ - struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); - - line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER); - return snd_pcm_lib_free_pages(substream); -} - -/* trigger callback */ -int snd_line6_capture_trigger(struct snd_line6_pcm *line6pcm, int cmd) -{ - int err; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: -#ifdef CONFIG_PM - case SNDRV_PCM_TRIGGER_RESUME: -#endif - err = line6_pcm_acquire(line6pcm, - LINE6_BIT_PCM_ALSA_CAPTURE_STREAM); - - if (err < 0) - return err; - - break; - - case SNDRV_PCM_TRIGGER_STOP: -#ifdef CONFIG_PM - case SNDRV_PCM_TRIGGER_SUSPEND: -#endif - err = line6_pcm_release(line6pcm, - LINE6_BIT_PCM_ALSA_CAPTURE_STREAM); - - if (err < 0) - return err; - - break; - - default: - return -EINVAL; - } - - return 0; -} - -/* capture pointer callback */ -static snd_pcm_uframes_t -snd_line6_capture_pointer(struct snd_pcm_substream *substream) -{ - struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); - - return line6pcm->pos_in_done; -} - -/* capture operators */ -struct snd_pcm_ops snd_line6_capture_ops = { - .open = snd_line6_capture_open, - .close = snd_line6_capture_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_line6_capture_hw_params, - .hw_free = snd_line6_capture_hw_free, - .prepare = snd_line6_prepare, - .trigger = snd_line6_trigger, - .pointer = snd_line6_capture_pointer, -}; - -int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) -{ - int i; - - /* create audio URBs and fill in constant values: */ - for (i = 0; i < LINE6_ISO_BUFFERS; ++i) { - struct urb *urb; - - /* URB for audio in: */ - urb = line6pcm->urb_audio_in[i] = - usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL); - - if (urb == NULL) { - dev_err(line6pcm->line6->ifcdev, "Out of memory\n"); - return -ENOMEM; - } - - urb->dev = line6pcm->line6->usbdev; - urb->pipe = - usb_rcvisocpipe(line6pcm->line6->usbdev, - line6pcm->ep_audio_read & - USB_ENDPOINT_NUMBER_MASK); - urb->transfer_flags = URB_ISO_ASAP; - urb->start_frame = -1; - urb->number_of_packets = LINE6_ISO_PACKETS; - urb->interval = LINE6_ISO_INTERVAL; - urb->error_count = 0; - urb->complete = audio_in_callback; - } - - return 0; -} |